Carbureter for explosive-engines.



No. 715,398. Patented Dec 9. I902.

A. A. LDNGUEMORE. GARBUBETER FDR EXPLDSl-VE ENGINES.

(Application filed Mar. 20, 1902.) (Nb M04161.)

Wi nesses.

m: uoahls Pains ca, FNDTQLITHOU WASHWGTON, u. c.

'AMELIE ADELE LONGUEMARE, OF PARIS, FRANCE.

CARBU'RETER FOR E XPLOSlVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 715,398, dated December9, 190 2.

Application filed March 20, 1902. Serial No- 99,119. (No model.)

its principal object to so construct a carbu-' reter that it willoperate without a constantfeed level, the supply to the atomizing andpulverizing parts being effected under convenient pressure, eithernatural or artificial.

The accompanying drawing illustrates a carbureter in vertical section.

The carbureter consists, essentially, of a cylindrical or like casing orbody with an interior chamber a, the base of which carries at its centera tubular extension I). This tubular extension Z) is connected at itslower part exterior to the body a to the union containing the conduit 0of the feed-reservoir, (not shown in the drawing,) situated in everyrespect as desired, and the contents of which are maintained eithernaturally or artificially under the necessary pressure for the feed.Located at the upper part of the said extension 1), inside the chamber aand arranged at a convenient height therein, is screwed a pulverizingstopper or nozzle (1.

e e are air-inlet orifices.

The base of the stopper d is hollowed in such a manner as to form afeed-chamber g, and abutting on this chamber is the upper part of theaforesaid union containing the supply-channel). At the top of thechamber g is an orifice it, through which the hydrocar hon isdistributed to radiating openings i, leading to an annularspacej, formedbetween the grooved edge of the base of the said stopper d and thecorresponding wall of the tubular extension 11. A needle-point 76,formed at the lower extremity of a spindle Z, is retained loosely withinthe orifice h. The spindle Z extends vertically through the upper partof the stopper d and is maintained and guided in the socket on of across-bar 71, arranged at the upper part of the chamber a. The movementof the spindle Z is limited by an adj ustment-screw t. At the top of thechamber a is secured a hood 0, connected to the tubular extension p ofthe suction of the engine; The spindle Z of the needle-point 7c isarranged and maintained so as to slide freely in the parts which ittraverses and to be actuated by the suction of the engine, as will behereinafter explained, to open and close the supplyorifice h, the areaof this opening consequently varying according to the speed of theengine. The said spindle Z carries a cap or covering q, which surroundsfor a certain distance the stopper (1 and the tubular extension Z). Theupper part rof the cap q is cylindrical, and its base sis widened tonearly the interior diameter of the chamber a. The vertical movement ofthe said cap or covering q in the chamber a is suficiently free toenable it to be operated by the suction of the engine, and owing to theenlargement of its base the air admitted through the orifices c isdirected into this cap or coveringq in such a manner as to come intocontact with the hydrocarbon distributed through the stopper (1 in apulverized state by reason of its passage through the grooves of thesaid stopper (1 in the well-known manner and to thus form the explosivemixture. The passage into the chamber a of the explosive mixture thusformed is effected through a ring of orifices If, pierced at differentheights on the periphery of the cap q, this difference of height havingfor its object to effect a division and in consequence a more completemixing of the combustible vapor before its admission to the engine. Theorifice h is normally closed by the needle-point 7c, the spindle lotwhich is through the inter mediary of the cap or covering q forceddownward under the action of a spring u. This spring it is interposedbetween the upper wall of the said cap, arranged on a recessed set-ringcarried by the cap, and the central part of the lower face of thecross-bar n in a recessed part therein provided for the purpose. Thetension of the spring a, is calculated in such a manner that theresistance to compression may be less than the edort resulting from thenormal suction of the engine through the tubular extensions 0 p, butgreater than the pressure under which the liquid is placed in thesupply-reservoir, in such a manner that the said supply-pressure cannotin any case by itself produce the lifting of the needle-point 7c and inconsequence the opening of the orifice h.

At the upper part of the chamber a, is arranged above the cap q asupplementary airinlet 20, adjustable by a ring 00, forming a registerthe actuating-handle of which may be operated by hand or automaticallyand by which I regulate at will the rate of progress or speed of theengine by the adjustment of the richness of the explosive mixture formedand distributed in the said chamber a. Exterior to the mixing-chamber ais an outer covering forming an annular chamber y, in which through thetubular extensions ,2 2, provided for this purpose, is effected thecirculation of the exhaust-gases for the purpose of maintaining thispart of the carbureter at a sufficiently-high temperature to facilitatevolatilization. From these arrangements it results that on each suctionof the engine, the effect of which is transmitted through the tubularextensions 0 19 into the chamber a, the cap q is raised an amountlimited by the screw '0 or by the engine itself determining a lesseffort of suction or by the admission of supplementary air adjustable bythe register 00, which admission is made above the cap or covering q andwill necessarily influence the raising of this latter, which will be somuch diminished that this supplementary admission of air will be larger.To the raising of the capv q correspond the simultaneous actions of,first, the lifting of the spindle Z and in consequence the openingthrough the needle-point 7c of the orifice h to an amount correspondingto the movement of the said cap q; secondly, the passage through theradiating openings '5 and the grooves of the stopper d of a quantity ofhydrocarbon corresponding to this area, which quantity of hydrocarbonwill be divided and pulverized and will enter in this state inside thecap q into contact with the airadmitted simultaneously into said capthrough the orifices e of the base of the chamber a in order toconstitute the explosive mixture which, always under the efiect ofsuction,will be drawn through the orifices t, mixed by its passagethrough the said orifices, and admitted into the chamher a to beconducted to the engine through the tubular extensions op. The suctionceasing, the spring it acts on the cap q, repelling this latter, thusclosing the orifice It.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In a carbureter,the combination of a mixing-chamber having suitableair-inlets, a hydrocarbon-duct extending into said chamber, aperipherally-grooved stopper arranged within said hydrocarbon-duct andhaving a series of radial passages extending from a central aperture tothe periphery, and a reciprocatingneedle-valve adapted to close saidcentral aperture and all of the passages radiating therefrom.

2. In a carbureter,the combination ofa mixing-chamber having suitableair-inlets formed at its lower end, a hydrocarbon-duct extendingupwardly into said chamber, a peripherally-grooved stopper fitted withinthe upper end of the hydrocarbon-duct, a feed-chamber being formedwithin the lower end of said stopper and communicating with a series ofradial passages that extend to the periphery of the stopper, a needlevalve extending loosely through said stopper and, when in its lowestposition, adapted to close the inner ends of the aforesaid radialpassages therein, a cap secured to said valve and surrounding thestopper, said cap and valve being raised by suction of the engine, and aspring for returning the valve to its lowest position.

3. In a carbureter, the combination of a mixing-chamber having suitableair-inlets in its lower end, a hydrocarbon-duct extending upwardly intosaid chamber, apulverizing-stopper arranged within the upper end of thehydrocarbon-duct, a valve for controlling the passage of hydrocarbonthrough said stopper, a cap surrounding said stopper and connected withsaid valve, said cap having its lower end flared and extending over theair-inlets at the lower end of the mixing-chamber, and having aperturesformed at dilferent heights in its side wall, the cap and valve beingraised by suction of the engine, and a spring for returning said partsto their normal positions.

In testimony whereof I have hereunto subscribed my name.

AMELIE ADELE LONGUEMARE.

Witnesses:

LOUIS SULLIGER, EDWARD P. MAOLEAN.

